Variable speed pulley

Details Variable speed pulley Variable speed pulley

1988-09-01

1990-02-20

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

F16H 1102

Patent

active

049022652

ABSTRACT:
In order to provide smoother transition for speed changes, a variable speed pulley having a movable sheave half and a fixed sheave half is provided with a torque cam. A spring biases the second sheave half axially of the first sheave to vary the width of a belt receiving groove. The torque cam forces the second sheave half in the same direction as the spring when the torque of a load operatively connected into the pulley assembly is increased. A centrifugal thrust arrangement urges the second sheave half in a direction reverse to the direction caused by the spring responsive to the rotational speed of the pulley.

REFERENCES:
patent: 4360353 (1982-11-01), Hattori et al.
patent: 4406644 (1983-09-01), Kinbara et al.

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